CN104632421B - Method and system for forming a vacuum - Google Patents
Method and system for forming a vacuum Download PDFInfo
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- CN104632421B CN104632421B CN201410640126.5A CN201410640126A CN104632421B CN 104632421 B CN104632421 B CN 104632421B CN 201410640126 A CN201410640126 A CN 201410640126A CN 104632421 B CN104632421 B CN 104632421B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
- B60T13/57—Vacuum systems indirect, i.e. vacuum booster units characterised by constructional features of control valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/02—Arrangements of pumps or compressors, or control devices therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
- F02M35/10229—Fluid connections to the air intake system; their arrangement of pipes, valves or the like the intake system acting as a vacuum or overpressure source for auxiliary devices, e.g. brake systems; Vacuum chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1205—Flow throttling or guiding
- F02M35/1222—Flow throttling or guiding by using adjustable or movable elements, e.g. valves, membranes, bellows, expanding or shrinking elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
- F02D2009/0201—Arrangements; Control features; Details thereof
- F02D2009/024—Increasing intake vacuum
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
本申请提供了用于减少在生成真空期间从抽吸器到车辆舱室的令人厌恶的噪音的产生和传递的方法和系统。在选择的条件下，通过进气抽吸器的动力流可能导致啸叫噪音在抽吸器处产生并且通过抽吸器与真空容器之间的旁通通道内打开的止回阀被传递到车辆舱室内。在这些条件下，抽吸器截止阀被关闭以减少通过抽吸器的动力流，由此减少啸叫噪音。
The present application provides methods and systems for reducing the generation and transmission of objectionable noise from the aspirator to the vehicle cabin during vacuum generation. Under selected conditions, the power flow through the intake air extractor may cause a whistling noise to be generated at the extractor and transmitted to the vehicle through an open check valve in the bypass passage between the extractor and the vacuum vessel inside the cabin. Under these conditions, the aspirator shut-off valve is closed to reduce motive flow through the aspirator, thereby reducing whistling noise.
Description
Technical field
The present invention relates to improve the injector for being coupled to engine system to be vacuum formed efficiency.
Background technique
Vehicular system, which may include, utilizes vacuum actuated various vacuum consumption equipment.These equipment, which may include, for example to be made
Dynamic booster.The vacuum of these equipment utilizations can be provided by dedicated vacuum pump.In other other embodiments, one or
Multiple aspirators (may be alternatively referred to as injector, venturi pump, jet pump and injector), which can be coupled in, can be constrained
Engine air flow simultaneously is utilized to be formed in the engine system of vacuum.
Since aspirator is passive equipment, when being used in engine system, they provide the vacuum shape of low cost
At.The vacuum capacity formed at aspirator can be controlled by controlling the Powered Air flow velocity rate across aspirator.For example, working as
When being incorporated into engine aspirating system, otherwise aspirator, which can use, forms vacuum for the energy lost due to throttling.
Although aspirator can efficiency with lower cost and relative to electrically driven or engine-driven vacuum pump to improve
Vacuum is formed, but their uses in engine aspirating system usually can be used air-distributor vacuum and maximum solar term
Door bypass flow is inhibited.The certain methods for solving the problems, such as this include by valve and aspirator arranged in series, or simultaneously valve
Enter into the structure of aspirator.This valve can be referred to as aspirator shut-off valve (ASOV).The amount of opening of the valve is controlled
To control the Powered Air flow velocity rate across aspirator, thus the vacuum capacity that control is formed at aspirator.Pass through control valve
Amount of opening, the air capacity and suction air flow for flowing through aspirator, which move rate, to be changed, thus with engine operating condition
(such as intake manifold pressure change) adjustment is vacuum formed.
At air inlet aspirator be vacuum formed also can by increase across aspirator trunnion flow rate by
Enhancing.In one example, this can enter (or outflow) access of aspirator or the size of pipeline by increasing guidance air-flow
(such as diameter) Lai Shixian.However, the present inventors have realized that this adjustment may cause disgusting noise and be passed
To vehicle cabin.For example, the pipeline for introducing or drawing air inlet aspirator may cause loud noise of uttering long and high-pitched sounds and be passed from aspirator
It leads into brake booster and on it into vehicle cabin.Since the velocity of sound in aspirator larynx inner air tube is flowed in injection
Become Supersonic Flow in the cone of divergence of area and aspirator, therefore forms the noise.When Supersonic Flow falls sharply to secondary noise
When speed flowing, with regard to generating noise of uttering long and high-pitched sounds.The noise may be disgusting for vehicle operator and may be decreased
Their driving experience.
Summary of the invention
Problem above can be solved by method of the operation with valvular air inlet aspirator, air inlet aspirator enhancing
It is vacuum formed and reduces the generation for detesting noise simultaneously.One exemplary method includes: closing is coupled in very in the upstream of aspirator
The first valve between empty container and inlet manifold responds the second valve being coupled between vacuum tank and inlet manifold with this
Opening.Here, it (is in this case air inlet discrimination that the first valve, which controls kinetic current to enter low pressure remittance (sink) by aspirator,
Pipe).By this method, during the condition when howling may be passed through the first valve in an open position, pass through
The kinetic current of aspirator is disabled.In other words, when by-passing valve is inferred to be open condition, ASOV is ordered to be closed.It is other
Port valve is generally check-valves.
As an example, engine system can be configured as with the throttle being coupled in the first air inlet bypass
The aspirator at door both ends.Air inlet bypass, which can be configured as, conveys a part of inlet air from the upstream of inlet air compressor
To the downstream of air inlet shutter.Solenoid-operated aspirator shut-off valve (ASOV) can be coupled to the pumping in air inlet bypass
The upstream of haustorium is to change the kinetic current by aspirator.Engine controller can be based on various engine operating conditions such as manifold pressure
Power, boost pressure, brake booster vacuum degree, engine vacuum demand etc. adjust the solenoidal opening and closing of vacuum.It takes out
Haustorium trunnion can be coupled to vacuum customer (such as brake booster) so that the vacuum formed at aspirator can be used in
Meet brake vacuum demand.Further bypass can be at a certain position in downstream that aspirator exports by brake booster
It is coupled to inlet manifold.Check-valves in bypass can be during the condition of selection (such as when air-distributor vacuum is than making
When dynamic booster vacuum is deeper) it opens, so that brake booster vacuum and air-distributor vacuum are substantially balanced.
The present inventors have realized that disgusting noise of uttering long and high-pitched sounds may be formed at aspirator trunnion and when flowing
The downstream of the point is passed to (when ASOV is opened) when generation.This noise passes through the bypass check valve opened and by leading
Pipe is passed to brake booster.Due to the Sonic condition at trunnion, which cannot upstream be passed by aspirator trunnion
It is delivered to vehicle cabin.Therefore, during needing the condition of vacuum, ASOV opening, which is merely deferred until, is inferred to bypass check valve pass
It closes.Engine controller can be based on relative to brake booster vacuum (as estimated) by brake booster pressure sensor
Air-distributor vacuum (as passed through manifold pressure sensor estimation) opens or closes state infer bypass check valve.In response to
Vacuum requirement, controller can initially allow for increasing from inlet manifold via bypass check valve in braking in the case where ASOV is closed
Extract vacuum at depressor out.When being inferred to bypass check valve closing, ASOV can be opened, and kinetic current can be guided through pumping
Haustorium, and vacuum can be drawn into brake booster from aspirator trunnion.
By this method, by closing ASOV during the condition when bypass check valve is opened, reduce and in these conditions
Vacuum of the period at aspirator generates the transmitting of relevant noise of uttering long and high-pitched sounds.Aspirator is passed through until bypass by delay kinetic current
Check-valves is closed, and reduces the formation and transmitting of the disgusting noise caused by generating aspirator vacuum.It is overall
On, aspirator can meet brake vacuum demand with lower cost and with the efficiency of raising, without reducing vehicle operating people
The driving experience of member.
It should be understood that the above content is provided for introducing quilt in specific embodiment below with simplified form
The conceptual choice further described.It is not intended that indicating the key or essential feature of claimed theme, the theme
Range limited by being appended hereto claims of specific embodiment.In addition, claimed theme is not limited to solve
The certainly embodiment of disadvantage mentioned above or any disadvantage mentioned in any part of the disclosure.
Detailed description of the invention
By read non-limiting embodiment the following specifically describes and refer to attached drawing, the theme of the disclosure will be by preferably
Understand, in which:
Fig. 1 shows the schematic diagram comprising the engine system with valvular aspirator.
Fig. 2 shows a high-level flowchart, the operation that may be carried out so that control aspirator shut-off valve is illustrated
To reduce disgusting noise transmission to vehicle cabin program.
Fig. 3 shows the adjustment of the exemplary ASOV for reducing the indoor noise of uttering long and high-pitched sounds of vehicle hold.
Specific embodiment
The present invention provides at the air inlet aspirator for being coupled to engine system (such as engine system of Fig. 1)
Form the method and system of vacuum.Shape is opened or closed based on the check-valves in the bypass for being coupled in aspirator downstream
State, the opening degree of the adjustable power flow control valve for being coupled to aspirator upstream.Controller, which can be configured as, executes control
Processing procedure sequence (such as example procedure in Fig. 2) so as to during the condition when check-valves is opened close aspirator shut-off valve, thus
Reduce the generation and transmitting that the relevant detest noise into vehicle cabin is vacuum formed to aspirator.Exemplary valve adjustment ginseng
Fig. 3 is examined to describe.
Fig. 1 is turned to, this illustrates the exemplary engine system 100 comprising engine 12.In this example, engine 12
For the spark ignition engine of vehicle, the engine includes multiple cylinder (not shown)s.As those skilled in the art institute
Known, the combustion incident in each cylinder drives piston, which rotate crankshaft in turn.In addition, engine 12 may include
Multiple engine valves are to control the air inlet and exhaust of the gas in multiple cylinders.
Engine 12 has engine intake duct 23, which includes along 18 fluid of intake channel
It is coupled to the air intake door 22 of motor intake manifold 24.Air can be from the air comprising the environmental communication with vehicle
The air induction system (AIS) of clarifier 33 enters intake channel 18.The position of air inlet shutter 22 can be led to by controller 50
The signal of the electric motor or actuator that are provided to include in air throttle 22 is crossed to change, this configuration is commonly known as electricity
Sub- throttle control (ETC).By this method, air throttle 22, which can be operated to vary, is supplied to inlet manifold and multiple engines
The inlet air of cylinder.Inlet duct 23 may include mass air flow sensor 58 and Manifold Air Pressure sensor 60 with
Just respective signal MAF and MAP is provided to controller 50.
In some embodiments, engine system 10 is turbocharged engine system, and wherein engine system also includes pressurization
Equipment.In this example, intake channel 18 includes compressor 90 so as to along the received air inlet of intake channel 18 inflation progress
Pressurization.Charger-air cooler 26 (or intercooler) is coupled in the downstream of compressor 90 so as in conveying boost charge-air to air inlet discrimination
It is cooled to before pipe.In the embodiment that supercharging equipment is turbocharger, compressor 90 can be coupled to exhaust driven gas turbine and (not show
Show) and driven by exhaust driven gas turbine.And compressor 90 can at least partly be driven by electric motor or engine crankshaft.
In some embodiments, compressor bypass access (not shown) can be coupled in 90 both ends of compressor to be pressed
At least part inlet air that contracting machine 90 compresses branches back to the upstream of compressor.When comprising compressor bypass valve, pass through
The air capacity of compressor bypass access transfer can be controlled by opening the compressor bypass valve (CBV) being located in bypass
System.Change the amount of charge air that upstream of compressor is recycled to from compressor downstream by control CBV, can be realized pressurization and
Surge control.
In some embodiments, engine system 10 may include positive crankcase ventilation (PCV) (PCV) system (not shown), should
Pcv system is coupled to engine intake so that the gas in crankcase can be discharged in a controlled manner from crankcase.
Wherein, under the conditions of non pressurized (when manifold pressure (MAP) is less than atmospheric pressure (BP)), air passes through snorkel or discharge pipe 64
It is drawn into crankcase.Crankcase bleed pipe 64 can be coupled to the FAI Fresh Air Intake access 18 of 90 upstream of compressor.Some
In example, crankcase bleed pipe 64 can be coupled in the downstream of air purifier 33 (as shown in the figure).In other examples, crankshaft
Case ventilation duct can be coupled to the intake channel 18 of 33 upstream of air purifier.Pressure sensor 59 can be coupled in crankcase row
To provide the estimated value of crankcase discharge pipe pressure and compressor inlet pressure in outlet pipe 64.Then, crank case gases can edge
Crankcase passageway 65 be transported to inlet manifold 24.
It is oriented parallel to the conduit 80 (being also referred to as bypath air intake channel 80 herein) of air inlet access 18
Can be configured as will be from the one of the received inlet air in 33 downstream of air purifier and 90 upstream of compressor via aspirator 160
Part is transferred to inlet manifold 24.Aspirator 160 can be aspirator, injector, injector, Venturi tube, jet pump or class
As passive equipment.In this example, aspirator is (or to draw comprising power inflow entrance 162, mixing outflux 164 and trunnion
Entry portal) 166 three port devices.Aspirator 160 has upstream power inflow entrance 162, and air is flowed into via the upstream power
Mouth 162 enters aspirator.Aspirator 160 also trunnion 166 or injection comprising being connected to along the first access 82 with vacuum tank 38 enter
Mouthful.The air for flowing through power inflow entrance 162 can be converted into energy of flow in aspirator 160, thus creation and larynx
Pipe 166 be connected to low pressure and be evacuated at trunnion.The vacuum extracted out at the trunnion 166 of aspirator 160 is by being located at
First check-valve 72 in first access 82 is directed into vacuum tank 38.First check-valve 72 allows vacuum tank 38 to keep it
Any vacuum makes the pressure of the power inflow entrance of aspirator equal with the pressure in vacuum tank.Although described embodiment
The display of first check-valve 72 is independent valve, but in the alternative embodiment of aspirator, check-valves 72 can be integrated
In aspirator.
Aspirator 160 includes also mixed downstream outflux 164, and the air for having already passed through aspirator 160 can be via under this
Trip mixing outflux 164 is discharged and is directed into inlet manifold 24.So, inlet manifold 24 is also along alternate path 84
It is coupled to vacuum tank 38.The vacuum that second check-valve 74 in alternate path 84 allows to be formed at inlet manifold is when around pumping
It is directed into vacuum tank 38 when haustorium, but air is not allowed to flow into vacuum tank from inlet manifold.Similarly, in air inlet
During condition when air pressure in manifold is higher, check-valves 74 does not allow air return to pass through injector and enters conduit 80, comes
The intake channel of 90 upstream of compressor can be routed back to from air here.Since vacuum tank 38 can be from air inlet discrimination
Pipe 24 directly receives vacuum, therefore during the condition when air-distributor vacuum is deeper than vacuum tank vacuum degree, the second non-return
Valve 74 allows for vacuum to be extracted into vacuum tank 38 from inlet manifold 24.In addition, second check-valve 74 allows vacuum tank 38 to protect
Holding its any vacuum makes the pressure in inlet manifold 24 equal with the pressure in vacuum tank.In some embodiments, second
Access 84 and check-valves 74 may be constructed (and being referred to as) bypass passageways, provide high flow rate channel in order to which air exists
Inlet manifold is flowed to from vacuum tank while around aspirator 160.When container pressure is on manifold pressure, this flowing
Channel takes advantage.So, the high pressure spot (suction port of compressor) in described system can be permanently attached to aspirator and enter
Mouthful and aspirator exit point low pressure point (inlet manifold) can be connected to by fixed course.In alternative embodiments, aspirator
Outlet can be connected to minimal pressure force by fixed course via check-valves.Each of first and second accesses are in vacuum tank
The downstream (on the direction of flowing) of 38 outlet is merged into third path 86.
In some instances, aspirator 160 can be operated passively, such as wherein be taken across the kinetic current of aspirator 160
Any active control certainly executed with other engine operation parameters without control system in the pressure in engine system 10
System.However, in the embodiment in figure 1, aspirator shut-off valve (ASOV) 91 is actively controlled so as to allowed/not allowed kinetic current
(continuously may be used by aspirator (in the case where bifurcation (binary) ASOV) or reduction/increase by the flow of aspirator
In the case where the ASOV of change).Therefore, by adjusting the opening degree of ASOV 91, the kinetic current across aspirator 160 can be by
Change, and the vacuum capacity extracted out at aspirator trunnion 166 can be conditioned to meet engine vacuum demand.
As shown, ASOV 91 is disposed in the bypass inlet air access 80 of the trunnion upstream end of aspirator 160.
In other embodiments, ASOV can be disposed in the downstream of the trunnion of aspirator (for example, in discharge pipe or under discharge pipe
Trip) or ASOV can with aspirator be integrally formed (for example, the valve can be disposed at the trunnion of aspirator).By ASOV
An advantage for being located in aspirator upstream is, trunnion downstream or ASOV and one bodily form of aspirator of aspirator are in ASOV
At configuration compare, the pressure loss relevant to ASOV have minor impact.
ASOV 91 can be the solenoid valve of electric actuation, and its state can be based on various start by controller 50
Machine operating condition controls.However, ASOV can be pneumatic (such as vacuum actuated) valve as replaceable example；In this case,
Actuating vacuum for valve can converge from other low pressure of inlet manifold and/or vacuum tank and/or engine system.
In the embodiment that ASOV is pneumatic control valve, can be executed independently of power train control module ASOV control (for example,
ASOV can be passively controlled based on the pressure/vacuum degree in engine system).
No matter it is electrically actuated or use is vacuum actuated, ASOV 91 can be bifurcation valve (for example, two-way valve)
The either valve of continuous variable.Bifurcation valve can be to control, so as to double with either fully opening or completely close (closure)
The fully open position of state valve is the position that the valve does not apply flowing limitation, and the fully closed position of bifurcation valve is
The valve limits all flowings so that not flowing the position that can pass through the valve.In contrast, the valve of continuous variable
It can be partially opened with the angle of variation.Embodiment with continuous variable ASOV can pass through suction in control kinetic current
Greater flexibility is provided in terms of device, but the disadvantage is that the valve of continuous variable may be more more expensive than bifurcation valve.In other examples
In, ASOV 91 can be the valve of gate valve, pivot plate valve, poppet or another suitable type.
The state (for example, opening or closing) of ASOV 91 can be determined based on different engine operating conditions.Show at one
In example, the state of ASOV 91 is determined based on the vacuum degree in vacuum tank 38, wherein the opening degree of ASOV is with vacuum degree
Decline (for example, below vacuum level threshold) and increases to increase the vacuum at aspirator and to generate.Then when in container
When vacuum degree is raised to threshold value or more, the opening degree of ASOV can be reduced.As another example, can based on boost pressure come
Determine the state of ASOV 91.
ASOV is controlled by controlling the solenoid of ASOV 91, controller 50 can have to ASOV close to completely
Thus control controls the kinetic current of aspirator.Particularly, ASOV 91, which can be controlled to provide, has high kinetic current rate
Aspirator, without reducing air inlet shutter in the warm idle condition phase with minimum alternating current generator or compressor of air conditioner load
Between establish the ability of low-down airflow rate.So, when engine reaches operating temperature, frontal attachments driving (FEAD)
When load is lower and the load of fluid torque-converter is lower, engine is with the requirement of low-down airflow rate.By on-demand
(on-demand) ASOV is opened on the basis of, injector kinetic current can cause the condition greater than expected air-flow that can be subtracted
Few (for example, being minimized).Additional fuel is caused to be sprayed due to being greater than expected airflow rate, by reducing flow perturbation
A possibility that, the performance and fuel economy of engine are enhanced.
Vacuum tank 38 can be coupled to one or more engine vacuum consumption equipment 39.For example, vacuum consumes equipment
39 can be coupled to the brake booster of the wheel of vehicle brake in vehicle cabin 102, and wherein vacuum tank 38 is braking
Vacuum cavity before the diaphragm of booster.Wherein, vacuum tank 38 can be inner vacuum container, be configured as amplification by
Vehicle operator 130 applies wheel of vehicle brake (not shown) by the power that brake pedal 134 provides.Brake pedal
134 position can be monitored by brake pedal sensor 132.It is appreciated that although described embodiment is described
For using brake booster as vacuum customer, but in alternative embodiments, can be disappeared with interchangeable engine vacuum
Device is consumed to substitute.For example, vacuum tank can be coupled to brake booster, scavenging tank, inflation operated control valve, crankcase ventilation
One or more of device and turbine wastegate.In addition, any vacuum tank can be substituted.In some embodiments
In, as set forth, vacuum transducer 40 (or pressure sensor) can be coupled to vacuum tank 38 in order to provide about
The estimated value of vacuum degree in container.
Check-valves control in each first and second access goes to the/flow direction from container.Alternate path 84
By vacuum tank 38 be further coupled at the fastener downstream with aspirator outlet engine (in the flowing direction) into
Gas manifold 24.
In some embodiments, it is vacuum formed period at aspirator 160, noise of uttering long and high-pitched sounds (hissing noise) exists
It is formed at aspirator, is then passed to vehicle cabin 102 via vacuum tank 38 and vacuum consumption equipment 39.It utters long and high-pitched sounds noise pair
It may be disgusting for vehicle operator and may be decreased their driving experience.By adjusting be passed through suction
The size of device 160 and the pipeline or access drawn from aspirator 160 increases the flow rate of the trunnion across aspirator in turn
Enhance in the embodiment being vacuum formed at air inlet aspirator 160, noise of uttering long and high-pitched sounds may aggravate.For example, in aspirator trunnion
Diameter is increased in the embodiment of (for example, increasing to 4mm diameter), and whistle may be louder.So, due to aspirator larynx
The velocity of sound flowing of air in pipe becomes supersonic speed in the trunnion 166 of aspirator and outlet 164, therefore forms the noise.
When supersonic flow falls sharply to subsonic stream, with regard to generating noise of uttering long and high-pitched sounds.Due to velocity of sound rate, which cannot be upward
Trip passes through trunnion and reaches vehicle cabin.Also due to the reason of velocity of sound rate, which is also impossible to the suction at via trunnion
Inbound port is passed.Therefore, which may propagate out the diverging conical (or mixing outflux) of aspirator.In other words, exist
During condition when second check-valve 74 is opened, the sound transmission to vacuum tank and vacuum consumption equipment are (for example, braking pressurization
Device) and it is then passed to vehicle cabin.As Fig. 2 is described in detail, during vacuum requirement, controller 50 can be based on second
The state of check-valves 74 adjusts the opening of ASOV 91.Specifically, in response at aspirator 160 formed vacuum demand,
The opening of ASOV 91 can be merely deferred until that the closing of confirmation second check-valve 74 is made us detesting to reduce into vehicle cabin
The formation and transmitting of the noise of evil.
Fig. 1 is rotated back into, engine system 10 also may include control system 46, and the control system 46 includes controller
50, sensor 51 and actuator 52.Exemplary sensors include mass air flow sensor 58, Manifold Air Pressure sensor
60, crankcase discharge pipe pressure sensor 59 and vacuum transducer 40.Example actuator includes engine valve, throttle
Door 22 and ASOV 91.Controller 50, which can further include, has instruction, program and/or code to operate engine
Entity non-transitory memory.The example procedure executed by controller 50 is shown in FIG. 2.
Turning now to Fig. 2, example procedure 200 be displayed for operation be coupled in air inlet aspirator upstream (or with one of
What body was formed) aspirator shut-off valve (ASOV).The program makes it possible to pass through aspirator based on engine vacuum demand to adjust
Kinetic current, and reduce enter vehicle cabin since kinetic current is formed by disgusting noise transmission simultaneously.
At 202, which includes to estimate and/or measure engine operating condition.These operating conditions including, for example, engine speed,
Engine temperature, atmospheric conditions (temperature, atmospheric pressure (BP), humidity etc.), boost pressure level, expectation torque, EGR etc..
At 204, it may be determined whether vacuum requirement.Specifically, it may determine whether to require to be vacuum formed.One
In a example, based on estimated engine operating condition, determination meets vacuum degree required by engine vacuum demand.Wherein, may be used
To determine vacuum degree required by operating one or more engine vacuum consumption equipment.For example, it may be determined that increasing via braking
Depressor provides braking auxiliary required vacuum degree.As another example, it can determine that actuating is used for the waste gate of pressurization control
Required vacuum degree.As another example, vacuum degree required by purging fuel system tank completely can be determined.As another
Example can determine vacuum degree required by actuating CMCV.Then it can determine in engine vacuum container with the presence or absence of inadequate
Meet the vacuum of vacuum requirement and whether needs further to be vacuum formed.For example, it may be determined that being coupled to engine vacuum
Consume the vacuum requirement whether vacuum degree in the vacuum tank of equipment is sufficient for vacuum consumption equipment.This includes that determination is being made
Whether deposited in waste gate vacuum tank with the presence or absence of sufficient vacuum in order to provide braking auxiliary in dynamic booster vacuum tank
In sufficient vacuum so as to actuating turbine waste gate, in the vacuum tank for being coupled to CMCV with the presence or absence of sufficient vacuum so as to
Activate CMCV etc..Similarly, it can estimate the vacuum degree at various other engine vacuum customers.Further, it is sending out
Motivation includes in the embodiment of public vacuum tank, and the vacuum degree of public vacuum tank can be evaluated relative to vacuum requirement,
To determine whether to require further to be vacuum formed.So, if met in container without enough vacuum true
Empty demand then can be confirmed and need additional be vacuum formed.
Although the program proposes to determine in vacuum tank with the presence or absence of sufficient vacuum to meet engine vacuum demand,
But in other examples, the available air-distributor vacuum amount under universal operating condition can also be estimated.Wherein it is possible to determine
Meet the vacuum need of various vacuum customers with the presence or absence of sufficient vacuum in vacuum tank to supplement air-distributor vacuum
It asks.
It is vacuum formed if do not asked, 206, which includes to close ASOV (if it has already turned on) or maintain
ASOV closes (if it has been switched off) to reduce the kinetic current by aspirator.So, ASOV can be electromagnetism control
The dual-port valve of system.It closes valve and may include and completely close valve or valve shifted to the position more closed.Due to subtracting
Few kinetic current can extract less vacuum out at aspirator.Closing ASOV may include controller and cause in the closing direction
Dynamic ASOV solenoid.By this method, during high vacuum condition, when not needing supplement vacuum, ASOV can be turned off to subtract
Small being vacuum formed at aspirator.
It, can be at 208 if there are insufficient vacuum and requiring further to be vacuum formed in vacuum tank
Determine whether there is the condition of uttering long and high-pitched sounds.Specifically, it can determine whether be possible to generate during generating vacuum at air inlet aspirator
And transmit disgusting noise of uttering long and high-pitched sounds.As discussed with reference to Fig. 1, in the bypass check valve (second check-valve of example as shown in figure 1
74) during condition when opening, disgusting noise of uttering long and high-pitched sounds may be passed in vehicle cabin from air inlet aspirator.The bypass is stopped
It returns valve and can be and be coupled in the mechanical valve between vacuum tank and inlet manifold in air inlet aspirator downstream, allow single direction
Flowing.It can be pushed away based on the air-distributor vacuum of the vacuum degree relative to vacuum tank (for example, brake booster vacuum)
The disconnected instruction for opening or closing state about bypass check valve door.For example, air-distributor vacuum can be sensed by manifold pressure
Device (MAP sensor 60 of example as shown in figure 1) is estimated, and vacuum tank vacuum degree is by being coupled to the pressure sensor of container for example
Brake booster vacuum transducer (for example, vacuum transducer 40 in Fig. 1) is estimated.Here, the instruction is based on multiple sensings
The output of device.When air-distributor vacuum is deeper than vacuum tank vacuum degree (for example, when air-distributor vacuum exceeds vacuum tank
When vacuum degree reaches more than threshold quantity), controller can indicate that bypass check valve is opened.In alternative embodiments, the instruction
Can be based on the rate that is vacuum formed at vacuum tank, such as it is based only upon the output of vacuum transducer 40.Here, the instruction is based on
The output of single-sensor provides the benefit that component is reduced in terms of cost and complexity.Vacuum shape at vacuum tank
When being higher than threshold value at rate (while ASOV is opened), controller can indicate that bypass check valve is opened, and the threshold value is based on suction
Rate is vacuum formed at device.For example, if vacuum, which is drawn at the speed ratio aspirator of brake booster, is vacuum formed speed
Rate faster, then can be inferred that bypass check valve is open.
It should be appreciated that the condition of uttering long and high-pitched sounds (and bypass check valve opening) instruction be based on inlet manifold sensor (such as
MAP sensor 60 in Fig. 1) and brake booster sensor (vacuum transducer 40 of example as shown in figure 1) in each output
Embodiment in, two sensors can be the pressure sensor of same type.For example, two sensors can be absolute sensor
Device, differential sensor or standard transducer (gauge sensor).If they are two distinct types of sensors, such as such as
Fruit one is standard transducer and the other is absolute pressure transducer, then their output may be needed by inferring or measuring
Atmospheric pressure be associated with.For example, it may be desirable to which atmospheric pressure is added to the output of standard pressure transducer to generate absolutely
Pressure output, then absolute pressure output can be compared with the output of absolute pressure transducer.As another example, may be used
It can need to subtract atmospheric pressure from the output of absolute pressure transducer so that generate can be with the output phase of standard pressure transducer
The normal pressure output compared.
If bypath valve is closed, the condition of uttering long and high-pitched sounds cannot be confirmed, and the program proceeds to 218 to open ASOV
Vacuum requirement is responded to increase the kinetic current by aspirator.Due to increased kinetic current, more vacuum can aspirated
It is extracted at device.The trunnion of aspirator can be coupled to the vacuum tank of vacuum consumption equipment, dynamic to pass through at aspirator
The vacuum that force flow is formed is drawn into vacuum tank.Opening ASOV may include controller activating solenoids in the direction of the opening.It beats
It opens the valve and may include and be fully open valve or valve moves on to the position more opened.By this method, in low vacuum condition
Period, when requiring supplementation with vacuum, ASOV can be opened to increase being vacuum formed at aspirator.
Then the program may proceed to 220, and herein when opening ASOV, air inlet shutter position is adjusted to reduce gas
Flow disturbance and maintain flow conditions.Specifically, the opening journey of air inlet shutter is adjusted based on the kinetic current by aspirator
Degree.With being increased by the kinetic current of aspirator, controller can reduce the opening degree of air inlet shutter.Then in aspirator
The vacuum that place is formed can be used to activate and operate (multiple) the vacuum consumption equipment for being coupled to vacuum tank.
It returns to 208, if it is determined that bypass check valve, which is open and exists, utters long and high-pitched sounds condition (i.e. since kinetic current passes through pumping
Haustorium and be likely occurred and utter long and high-pitched sounds), then at 210, the program include close the upstream of aspirator be coupled in vacuum tank with
Aspirator shut-off valve between inlet manifold, is responded with this and is coupled between vacuum tank and inlet manifold in the downstream of aspirator
Bypass check valve opening.Here, ASOV is also remained off (if having been switched off) or is switched even if needing vacuum
To closed position (if having already turned on).At 212, which includes by vacuum via bypass check valve from inlet manifold
It is directly pumped into vacuum tank, while bypassing aspirator (i.e. no any kinetic current passes through aspirator).So, vacuum can
It is pumped into vacuum tank by bypass check valve from inlet manifold with continuing on through, until true between vacuum tank and inlet manifold
Reciprocal of duty cycle substantially balances (for example, until the difference between air-distributor vacuum and brake booster vacuum is less than threshold quantity).?
At 214, the opening degree of air inlet shutter is adjusted based on the air-flow of inlet manifold is entered from vacuum tank to reduce air-flow
It disturbs and maintains flow conditions.Specifically, as the air-flow for entering inlet manifold from vacuum tank increases, it can reduce air inlet
The opening degree of air throttle.Extracted vacuum can be used simultaneously in actuating at aspirator and operation is coupled to vacuum tank
(multiple) vacuum consume equipment.
At 216, it can be confirmed that bypass check valve is to close.Therefore, when vacuum tank vacuum with inlet manifold
When Vacuum Balance, bypass check valve can be automatically turned off.As discussed at 208, the finger of the closing about bypass check valve
Show can based on air-distributor vacuum relative to vacuum tank vacuum degree comparison (for example, when they mutual threshold quantity it
When interior), or based at vacuum tank be vacuum formed rate (for example, when the rate be less than threshold rates when).If not yet
There is confirmation bypass check valve to close, then the program back to 210 and maintains ASOV to close until receiving about bypass non-return
The instruction that valve is closed.If it is confirmed that bypass check valve is to close, then the program proceeds to 218 to open ASOV and to take out
Extract vacuum at haustorium out.Since bypass check valve is closed during these conditions, it is indoor to reduce incoming vehicle hold
It utters long and high-pitched sounds noise, improves the driving sensation of operator, and allow simultaneously with low cost and high efficiency shape at air inlet aspirator
At vacuum.
By this method, ASOV is opened in response to vacuum requirement is merely deferred until that confirmation bypass check valve is closed.
In one example, a kind of engine system includes: the engine comprising inlet manifold；Inlet air compressor；Air inlet
Air throttle；It is configured as that inlet air is transferred to the bypass air inlet in the downstream of air throttle via aspirator from the upstream of compressor
Access；The first Electromagnetic Control valve in bypass intake channel is coupled in the upstream of aspirator；And via first check-valve
It is coupled to the brake booster of the trunnion of aspirator, which is further coupled under aspirator via second check-valve
The bypass intake channel of trip.The engine system can be further included with the computer being stored in non-transitory memory
The controller of readable instruction, in order to: in response to brake booster vacuum requirement, maintain the first valve to close and simultaneously via the
Air-distributor vacuum is pumped into brake booster by two check-valves；And the closing in response to second check-valve, open the first valve
Door is so that air flows through aspirator and aspirator vacuum is pumped into brake booster via first check-valve simultaneously.The hair
Motivation system, which may further include, to be coupled to inlet manifold with the pressure sensor of estimating manifold pressure and is coupled to braking
Booster is to estimate the pressure sensor of brake booster pressure, wherein estimating based on the brake booster pressure relative to estimation
The manifold pressure of meter infers the closing of second check-valve.Alternatively, it is possible to estimation when being kept closed based on the first valve
The reduction speed of brake booster pressure infer the closing of second check-valve.The controller may include further instruction
To reduce air inlet shutter based on the air-distributor vacuum in brake booster is pumped into when the first valve is kept closed
Opening degree.Similarly, which may include instruction to be based on being pumped into brake booster when the first valve is opened
Interior aspirator vacuum reduces the opening degree of air inlet shutter.
Example A SOV adjustment is shown referring now to Fig. 3.In the example of fig. 3, vacuum tank is coupled to brake booster.
Chart 300 depicts the state of ASOV at curve 302, and brake booster vacuum degree (BBVac) is depicted at curve 304,
Intake manifold vacuum (IMVac) is depicted at curve 306, is depicted at curve 308 by being coupled in aspirator trunnion
The flowing (stream _ CV1) of first check-valve between brake booster, and depict at curve 310 by be coupled in into
The flowing (stream _ CV2) of second check-valve between gas manifold and brake booster.
Before t1, brake booster vacuum degree can be high (curve 304), show in the presence of sufficient vacuum for making
Dynamic auxiliary.Due to not needing to be vacuum formed, ASOV is kept closed (curve 302).Between t1 and t2, vacuum can be by
It is assisted for braking, along with the corresponding decline of brake booster vacuum degree.At t2, it can determine that needs are vacuum formed.Together
For sample at t2 (and before t2), intake manifold vacuum can be low (curve 306).In one example, due to increasing
Hydraulic motor operation, intake manifold vacuum can be low.Since intake manifold vacuum is lower than brake booster at t2
Vacuum degree, no vacuum are pumped into brake booster from inlet manifold, are presented without and are flowed through in air inlet aspirator
The second check-valve (curve 310) being coupled at downstream between inlet manifold and brake booster.In other words, it can be inferred that
Second check-valve is to close.Therefore, vacuum requirement is responded at t2, also ASOV is opened without delay at t2.
Between t2 and t3, since ASOV is opened, kinetic current can be conducted through air inlet aspirator, and in aspirator
Trunnion at formed vacuum can be drawn into via the first check-valve that aspirator is coupled to brake booster braking pressurization
In device, the flowing (curve 308) for having through first check-valve is shown as.Since aspirator vacuum is extracted, braking pressurization
Device vacuum degree can rise.At t3, it can determine and not need further to be vacuum formed and ASOV can be closed.As a result,
There is no further vacuum to be drawn into brake booster and stop by the flowing of first check-valve yet.
Between t3 and t4, vacuum can be used for braking auxiliary, along with the corresponding decline of brake booster vacuum degree.?
At t4, it can determine and need to be vacuum formed again.Equally between t3 and t4, intake manifold vacuum can rise.At one
In example, due to the power operation of no pressurization, intake manifold vacuum can rise.Due to the intake manifold vacuum at t4
Higher than (or being deeper than) brake booster vacuum degree, so vacuum is pumped into brake booster from inlet manifold, show as depositing
In the flowing by second check-valve.In other words, can be inferred that second check-valve be open (while first check-valve close
It closes).Therefore, in response to vacuum requirement at t4, the opening of ASOV is delayed by.So, if ASOV is opened at t4
And second check-valve is open simultaneously, then the noise of uttering long and high-pitched sounds formed at aspirator can be passed to via second check-valve
In vehicle cabin and brake booster.Noise of uttering long and high-pitched sounds may be disgusting for vehicle operator and may be decreased
Their driving experience.Therefore, by keeping ASOV closing and simultaneously second check-valve opening, disgusting noise of uttering long and high-pitched sounds
It is formed and transmitting is reduced.
Second check-valve can be stayed open until brake booster vacuum and air-distributor vacuum have fully balanced
(for example, within mutual threshold quantity).For example, second check-valve can be stayed open from t4 until t5, while flowing continuation
By open second check-valve until t5.At t5, second check-valve can be closed.However, it is possible to meet vacuum not yet
It demand and may need further to be vacuum formed.Therefore, at t5, after confirmation second check-valve is closed, ASOV quilt
It opens to guide kinetic current to be pumped into brake booster by aspirator and by aspirator vacuum.As a result, between t5 and t6,
It can indicate the flowing by first check-valve (rather than second check-valve).
At t6, sufficient brake booster vacuum can be stored and ASOV can be closed.Between t6 and t7, vacuum
It can be used for braking auxiliary, along with the corresponding decline of brake booster vacuum degree.At t7, it can determine and need vacuum again
It is formed.At t7, as at t2, such as since engine with supercharger operates, intake manifold vacuum can be low.Therefore exist
At t7, as at t2, can be inferred that second check-valve be closed and ASOV opened without delay it is required to be formed
Vacuum.
By this method, during first condition, in response to vacuum requirement, controller, which can be opened, is coupled in air inlet aspirator
First valve of upstream end；And during second condition, in response to vacuum requirement, controller can postpone to open the first valve
It is closed until being coupled in the second valve at aspirator downstream.Here, the first valve of opening includes will during first condition
Vacuum is pumped into vacuum tank from the trunnion of air inlet aspirator, and during second condition, it includes to work as that the first valve is opened in delay
Vacuum is pumped into vacuum tank and when the second valve is closed by vacuum from motor intake manifold when second valve is opened
It is pumped into vacuum tank from the trunnion of air inlet aspirator.During second condition, the instruction of the closing about the second valve is based on
The air-distributor vacuum of vacuum degree relative to vacuum tank, when air-distributor vacuum is less than threshold value beyond vacuum tank vacuum degree
Controller indicates that the second valve is closed when amount.It alternatively, can be based in vacuum appearance about the instruction of the closing of the second valve
It is vacuum formed rate at device, when controller when being vacuum formed rate lower than threshold value and the closing of the first valve at vacuum tank
Indicate that the second valve is closed.Vacuum tank can be coupled to vacuum consumption equipment (such as brake booster).
Further, during first condition, controller can be based on entering hair from aspirator in throttle passage downstream
The air-flow of motivation inlet manifold adjusts air inlet shutter；And during second condition, controller can be beaten based on the second valve
Enter the air-flow of motor intake manifold from vacuum tank when opening and be based further on when the first valve is opened and enters from aspirator
The air-flow of motor intake manifold adjusts air inlet shutter.
In this way, it is possible to adjust the opening of the ASOV in response to vacuum requirement based on the state of bypass check valve.It is logical
It crosses delay and opens closing of the ASOV until confirming check-valves, into the formation and biography of the disgusting noise of uttering long and high-pitched sounds of vehicle cabin
It passs and is reduced.When it is possible, this allows using air-distributor vacuum.In addition, aspirator vacuum can be used to meet engine
Driving experience of the vacuum requirement without reducing vehicle operator.
It should be noted that the example control and estimation program that include herein can be with various engines and/or Vehicular systems
Construction is used together.Control method and program disclosed herein can be used as executable instruction and be stored in non-transitory memory
It is interior.Specific procedure described herein can represent one or more of any number of processing strategie, such as event
Driving, interruption driving, multitask, multithreading etc..Therefore, it is described it is various movement, operation and/or function may be with shown suitable
Sequence is concurrently performed, or is omitted in some cases.Similarly, described herein of the invention show is realized
The feature and advantage of example embodiment are not necessarily required to the processing sequence, but for the ease of illustration with explanation and provide described
Processing sequence.Depending on used specific policy, one or more of shown movement, operation and/or function can be with
It is repeatedly executed.In addition, described movement, operation and/or function can represent graphically and be programmed into engine control
Code in the non-transitory memory of computer readable storage medium in system processed.
It should be understood that construction and program herein disclosed is substantially exemplary, and these are specific real
It applies example to be not to be considered as limiting, because many variants are possible.For example, above-mentioned technology can be applied to V-6, I-4, I-
6, V-12, opposed 4 cylinder and other engine types.The theme of the disclosure is included herein disclosed various systems and construction
All novel and non-obvious combination and sub-portfolio with other features, function and/or property.
It is considered as certain combinations and sub-combinations that are considered novel and non-obvious that appended claims, which particularly point out,.These
Claim can be related to "one" element or " first " element or its equivalent.It should be appreciated that such claim includes
One or more such elements are included in, two or more such elements be both not necessarily to or be not excluded for.In this or phase
In the application of pass, by modification present claims or new claim, disclosed feature, function, element and/or property are proposed
Other combinations and sub-portfolio can be claimed.It is either wider than former scope of the claims, narrow, identical or different, in this way
Claim be all considered to be included in subject of the present invention in.
Claims (18)
1. a kind of method for engine comprising:
When intake manifold vacuum is beyond the more than one threshold quantity of vacuum tank vacuum degree, using controller instruction be arranged in by
The check-valves in channel that vacuum tank is coupled with inlet manifold is open；And
In response to the instruction, the active control valve for being arranged in the upstream of power inflow entrance of aspirator, the suction are closed
The channel between the mixing outflux and the check-valves and the inlet manifold of device couples.
2. according to the method described in claim 1, wherein the active control valve is the dual-port valve of Electromagnetic Control, and
Wherein the check-valves is the machinery valve for forcing one-way flow.
3. according to the method described in claim 2, wherein the trunnion of the aspirator is coupled to the vacuum tank, and wherein
The vacuum tank is coupled to vacuum consumption equipment.
4. according to the method described in claim 3, wherein vacuum consumption equipment be brake booster, wastegate actuator,
One or more of charge movement control valve and fuel system tank.
5. according to the method described in claim 4, further comprising: being vacuum formed rate higher than threshold at the vacuum tank
It is arranged in using controller instruction by the institute in the channel of the vacuum tank and the inlet manifold coupling when value
It states check-valves to be open, the threshold value is based on being vacuum formed rate at the aspirator.
6. according to the method described in claim 1, wherein closing the active control valve includes to completely close the active control
Valve processed.
7. a kind of engine method comprising:
Using controller based on the difference between intake manifold vacuum and vacuum tank vacuum degree, instruction, which is arranged in, holds vacuum
What the check-valves in the channel of device and inlet manifold coupling was open or closed；
The power inflow entrance for being coupled in air inlet aspirator is opened if the check-valves is to close in response to vacuum requirement
Upstream active control valve, the aspirator mixing outflux and the check-valves and the inlet manifold between institute
State channel coupling；And
In response to the vacuum requirement, if the check-valves is open, postpone to open the active control valve until
The controller indicates that the check-valves is closed.
8. according to the method described in claim 7, wherein opening the active control valve packet when the check-valves is to close
Containing vacuum to be pumped into the vacuum tank from the trunnion of the air inlet aspirator, and wherein, the active control is opened in delay
Valve includes to be pumped into the vacuum tank vacuum from the inlet manifold when the check-valves is to open and work as described
Check-valves is that when closing, vacuum is pumped into the vacuum tank from the trunnion of the air inlet aspirator.
9. according to the method described in claim 7, wherein indicating that the check-valves is open or closes and is described comprising working as
Intake manifold vacuum indicates that the check-valves is closed when exceeding the vacuum tank vacuum degree less than a threshold quantity.
10. according to the method described in claim 7, being wherein based on the vacuum about the instruction of the closing of the check-valves
Rate is vacuum formed at container.
11. according to the method described in claim 10, wherein indicate that the check-valves is open or closes comprising working as institute
That states at vacuum tank described is vacuum formed rate lower than threshold value and when the active control valve is closed simultaneously described in instruction
Check-valves is closed.
12. the vacuum disappears according to the method described in claim 8, wherein the vacuum tank is coupled to vacuum consumption equipment
Consuming equipment includes brake booster.
13. indicating that the check-valves is in response to the controller according to the method described in claim 8, it further comprises
It closes, adjusts air inlet section from the air-flow that the aspirator enters the inlet manifold based in the downstream of the air inlet shutter
Valve, and indicate that the check-valves is to open in response to the controller, from the vacuum when being opened based on the check-valves
Container enter the inlet manifold air-flow and be based further on the active control valve open when from the aspirator into
Enter the air-flow of the inlet manifold to adjust the air inlet shutter.
14. a kind of engine system comprising:
Engine, it includes inlet manifold；
Inlet air compressor；
Air inlet shutter；
Intake channel is bypassed, is configured as inlet air being transferred to the section via aspirator from the upstream of the compressor
The downstream of valve；
First Electromagnetic Control valve is coupled to the bypass intake channel in the upstream of the power inflow entrance of the aspirator
In；
Brake booster vacuum tank is coupled to the trunnion of the aspirator, the brake booster via first check-valve
Vacuum tank is further coupled to the bypass air inlet in the downstream of the mixing outflux of the aspirator via second check-valve
Access；And
Controller has the computer-readable instruction being stored in non-transitory memory, is used for:
In response to brake booster vacuum requirement,
Difference between the brake booster vacuum tank pressure of intake manifold pressure and estimation based on estimation indicates described the
What two check-valves were open or closed；
In response to indicating that the second check-valve is open, maintain the first Electromagnetic Control valve while closing via institute
It states second check-valve and is pumped into fluid in the inlet manifold from the brake booster vacuum tank；And
In response to indicating that the second check-valve is to close, the first Electromagnetic Control valve is opened to keep air flowing logical
It crosses the aspirator and fluid is pumped into the pumping from the brake booster vacuum tank via the first check-valve simultaneously
In the trunnion of haustorium.
15. system according to claim 14, further comprise be coupled to the inlet manifold so as to estimate it is described into
The pressure sensor of gas manifold pressure and the brake booster vacuum tank is coupled to estimate brake booster vacuum
The pressure sensor of container pressure.
16. system according to claim 14, further comprise be coupled to the brake booster vacuum tank so as to
The pressure sensor of brake booster vacuum tank pressure is estimated, wherein being kept closed based on the first Electromagnetic Control valve
The reduction speed of the brake booster vacuum tank pressure of Shi Suoshu estimation infers the closing of the second check-valve.
17. system according to claim 14, wherein the controller includes further instruction, so as to based on described the
It is pumped into from the brake booster vacuum tank when one Electromagnetic Control valve is kept closed via the second check-valve described
Fluid in inlet manifold reduces the opening degree of the air inlet shutter.
18. system according to claim 17, wherein the controller includes further instruction, so as to based on described the
From the fluid in the trunnion that the brake booster vacuum tank is pumped into the aspirator when one Electromagnetic Control valve is opened
To reduce the opening degree of the air inlet shutter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/080,358 | 2013-11-14 | ||
| US14/080,358 US9273651B2 (en) | 2013-11-14 | 2013-11-14 | Method and system for vacuum generation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104632421A CN104632421A (en) | 2015-05-20 |
| CN104632421B true CN104632421B (en) | 2019-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410640126.5A Expired - Fee Related CN104632421B (en) | 2013-11-14 | 2014-11-13 | Method and system for forming a vacuum |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US9273651B2 (en) |
| CN (1) | CN104632421B (en) |
| DE (1) | DE102014222714A1 (en) |
| RU (1) | RU2660742C2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160061164A1 (en) * | 2014-08-26 | 2016-03-03 | Dayco Ip Holdings, Llc | Vacuum producer including an aspirator and an ejector |
| US9796368B2 (en) * | 2015-11-13 | 2017-10-24 | Ford Global Technologies, Llc | Method and system for an aspirator for a brake booster |
| DE202017100156U1 (en) | 2016-10-14 | 2017-03-31 | Ford Global Technologies, Llc | Pressure tapping device and motor vehicle with pressure tapping device |
| DE102016220038A1 (en) | 2016-10-14 | 2018-04-19 | Ford Global Technologies, Llc | Pressure tapping device and motor vehicle with pressure tapping device and pressure tapping method |
| DE102016220037B4 (en) | 2016-10-14 | 2019-03-14 | Ford Global Technologies, Llc | Pressure tapping device and motor vehicle with pressure tapping device and pressure tapping method |
| CN111108291B (en) * | 2017-09-21 | 2022-07-26 | 戴科知识产权控股有限责任公司 | Electromagnetically activated vacuum pump for an engine system and system having the same |
| US10323609B1 (en) | 2018-01-05 | 2019-06-18 | RB Distribution, Inc. | Configurable engine manifold |
| IL257892A (en) | 2018-03-05 | 2018-05-02 | Bio Bee Sde Eliyahu Ltd | New methods for cultivation, cultivation and controlled release of biological control agents |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797551A (en) * | 2011-05-25 | 2012-11-28 | 福特环球技术公司 | Cooling arrangement for a chargeable internal combustion engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1778331A1 (en) * | 1990-09-13 | 1992-11-30 | Altajskij Polt I Polzun | Internal combustion engine supercharger |
| JP2008273274A (en) * | 2007-04-25 | 2008-11-13 | Toyota Motor Corp | Control device for negative pressure generator |
| US7966996B1 (en) | 2010-03-03 | 2011-06-28 | Ford Global Technologies, Llc | Vacuum supply system |
| US8343011B2 (en) * | 2010-08-24 | 2013-01-01 | Ford Global Technologies, Llc | Method and system for controlling engine air |
| US8857165B2 (en) * | 2011-03-17 | 2014-10-14 | Ford Global Technologies, Llc | Method and system for prioritizing vehicle vacuum |
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2013
- 2013-11-14 US US14/080,358 patent/US9273651B2/en not_active Expired - Fee Related
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2014
- 2014-11-06 DE DE102014222714.3A patent/DE102014222714A1/en not_active Withdrawn
- 2014-11-13 CN CN201410640126.5A patent/CN104632421B/en not_active Expired - Fee Related
- 2014-11-13 RU RU2014145696A patent/RU2660742C2/en not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797551A (en) * | 2011-05-25 | 2012-11-28 | 福特环球技术公司 | Cooling arrangement for a chargeable internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2660742C2 (en) | 2018-07-09 |
| DE102014222714A1 (en) | 2015-05-21 |
| US20150128884A1 (en) | 2015-05-14 |
| RU2014145696A3 (en) | 2018-05-08 |
| RU2014145696A (en) | 2016-06-10 |
| CN104632421A (en) | 2015-05-20 |
| US9273651B2 (en) | 2016-03-01 |
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